Triple

T5668432
Position Surface form Disambiguated ID Type / Status
Subject Olyokma River E124912 entity
Predicate riverSystem P1009 FINISHED
Object Lena River system E17170 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Lena River system | Statement: [Olyokma River, riverSystem, Lena River system]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Lena River system
Context triple: [Olyokma River, riverSystem, Lena River system]
  • A. Lena River chosen
    The Lena River is one of the longest rivers in the world, flowing through Siberia in northeastern Russia to the Arctic Ocean.
  • B. Upper Angara River
    The Upper Angara River is a major Siberian river in Russia that flows through Buryatia and Zabaykalsky Krai before emptying into Lake Baikal.
  • C. Lower Tunguska River
    The Lower Tunguska River is a major river in Siberia, Russia, known for flowing through remote taiga regions and for its proximity to the site of the 1908 Tunguska event.
  • D. Bolshaya Kaksha River
    The Bolshaya Kaksha River is a lesser-known Russian watercourse that serves as a tributary within the Vetluga River basin.
  • E. Angara River
    The Angara River is a major river in Siberia that flows northward from Lake Baikal through Irkutsk Oblast before joining the Yenisei River.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69c00828906881908966f270b8f130cf elicitation completed
NER batch_69c023471f688190acec330596238a50 ner completed
NED1 batch_69c0bf7e59b48190a4c240442d2d9136 ned_source_triple completed
Created at: March 22, 2026, 3:43 p.m.